7 papers
Evidence for Counterfactual Violation of Local Conservation Laws in Quantum Events
Patrick Cameron, Francesco Di Colandrea, Filippo Cardano +1
Physical conservation laws, such as those of energy and momentum, are generally believed to hold exactly and locally in spacetime, including in quantum phenomena. Yet Aharonov, Pop…
Tunable Quantum Interference in Free Space with a Liquid-Crystal Metagrating
Maria Gorizia Ammendola, Italo Machuca Flores, Sneha Dey +9
Structured optical materials provide a promising platform for photonic quantum information processing in free space. Beam splitters, a fundamental building block of photonic circui…
Skyrmionic polarization textures in structured dielectric planar media
Francesco Di Colandrea, Lorenzo Marrucci, Filippo Cardano
Skyrmionic patterns of optical fields have recently emerged across diverse photonic platforms. Here, we show that such textures also arise in the polarization eigenstates of light…
Tailoring spatial correlations with quantum interference
Carlo Schiano, Bereneice Sephton, Elnaz Darsheshdar +3
Photon correlations represent a central resource in many quantum optics experiments, with applications ranging from quantum information protocols to sensing. Engineering such corre…
Programmable non-Hermitian photonic quantum walks via dichroic metasurfaces
Paola Savarese, Sarvesh Bansal, Maria Gorizia Ammendola +6
The evolution of a closed quantum system is described by a unitary operator generated by a Hermitian Hamiltonian. However, when certain degrees of freedom are coupled to an environ…
Large-scale free-space photonic circuits in two dimensions
Maria Gorizia Ammendola, Francesco Di Colandrea, Lorenzo Marrucci +1
Photonic circuits, engineered to couple optical modes according to a specific map, serve as processors for classical and quantum light. The number of components typically scales wi…